C312312111133131212111133133313231333133313331322121111331333133313112211   >>    C31231211113313121211113313331323133313331333132212111133133313331311221   <<    C312312111133131212111133133313231333133313331322121111331333133313112213   >>      C312312111133131212111133133313231333133313331322121111331333133313112212   >>